Director Mani Nagaraj says composer-actor G.V. Prakash Kumar didn’t struggle as an actor in the forthcoming Tamil campus thriller “Pencil”, which was originally supposed to mark his acting debut.“On the sets, it took him just 4-5 days to get a hang of things but he never showed any signs of struggle to act. I think he found it really comfortable to act because he was apt for the role, which is why I approached him in the first place,” Nagaraj told.